Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 555", based on the 5-celled von Neumann neighborhood.
A272921
Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 555", based on the 5-celled von Neumann neighborhood.
Terms
- a(0) =1a(1) =5a(2) =29a(3) =149a(4) =669a(5) =2837a(6) =11709a(7) =47669a(8) =192669a(9) =775637a(10) =3115389a(11) =12495989a(12) =50079069a(13) =200585237a(14) =803115069a(15) =3214717109
External references
- oeis: A272921